External capsule

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Brain: External capsule
Horizontal section of right cerebral hemisphere. ("Capsula externa" label visible at right.)
Deep dissection of cortex and brain-stem. (External capsule visible at center.)
Latin	capsula externa
Gray's	subject #189 837
NeuroNames	hier-235

The external capsule is a series of white matter fiber tracts in the brain. These fibers run between the most lateral (toward the side of the head) segment of the lentiform nucleus and the claustrum.

[edit] Additional images

Superficial dissection of brain-stem. Lateral view.

Superficial dissection of brain-stem. Ventral view.

Dissection of brain-stem. Dorsal view.

[edit] External links

• Roche Lexicon - illustrated navigator, at Elsevier 13048.000-2
• Image at Univ. of South Carolina

v • d • e Brain: telencephalon (cerebrum, cerebral cortex, cerebral hemispheres)
primary sulci/fissures	medial longitudinal, lateral, central, parietoöccipital, calcarine, cingulate
frontal lobe	precentral gyrus (primary motor cortex, 4), precentral sulcus, superior frontal gyrus (6, 8), middle frontal gyrus (46), inferior frontal gyrus (Broca's area, 44-pars opercularis, 45-pars triangularis), prefrontal cortex (orbitofrontal cortex, 9, 10, 11, 12, 47)
parietal lobe	postcentral sulcus, postcentral gyrus (1, 2, 3, 43), superior parietal lobule (5), inferior parietal lobule (39-angular gyrus, 40), precuneus (7), intraparietal sulcus
occipital lobe	primary visual cortex (17), cuneus, lingual gyrus, 18, 19 (18 and 19 span whole lobe)
temporal lobe	transverse temporal gyrus (41-42-primary auditory cortex), superior temporal gyrus (38, 22-Wernicke's area), middle temporal gyrus (21), inferior temporal gyrus (20), fusiform gyrus (36, 37)
limbic lobe/fornicate gyrus	cingulate cortex/cingulate gyrus, anterior cingulate (24, 32, 33), posterior cingulate (23, 31), isthmus (26, 29, 30), parahippocampal gyrus (piriform cortex, 25, 27, 35), entorhinal cortex (28, 34)
subcortical/insular cortex	rhinencephalon, olfactory bulb, olfactory tract, corpus callosum (splenium, genu, rostrum), lateral ventricles, septum pellucidum, ependyma, internal capsule, corona radiata, external capsule, fornix (commissure of fornix), anterior commissure, posterior commissure
hippocampal formation	dentate gyrus, hippocampus, subiculum
basal ganglia	striatum (caudate nucleus, putamen), lentiform nucleus (putamen, globus pallidus), claustrum, extreme capsule, amygdala, nucleus accumbens
Some categorizations are approximations, and some Brodmann areas span gyri.